Prannoy and mitesh

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FUTURE READY

Presentation By

Prannoy and Mitesh

CONTENTS

HISTORY OF TELEVISION GENERATION OF TELEVISION HIGH-DEFINATION OR HDTV HISTORY OF HDTV DIFFERENCE FROM OTHERS HDTV IN INDIA ADVANTAGES & DISADVANTAGES OF HDTV CONCLUSION

HISTORY OF TELEVISION Television was not invented by a single

inventor, instead many people working together and alone over the years, contributed to the evolution of television.

Early inventors attempted to either build a mechanical television system based on the technology of Paul Nipkow's rotating disks; or they attempted to build an electronic television system using a cathode ray tube developed independently in 1907 by English inventor A.A. Campbell-Swinton and Russian scientist Boris Rosing.

GENERATIONS OF TELEVISION Black and White Television Color Television first authorized by the FCC

on December 17, 1953 based on a system invented by RCA.

Cable TV Remote Control Television LCD LED Plasma Television

A

HIGH-DEFINITION TELEVISION OR HDTV

Highdefination television are come

HISTORY

In the United States, the National Television System Committee (for which the NTSC standard is named) standardized on 525 lines at 30 fps in 1940, with regular broadcasts starting on July 1, 1941.

NTSC standard was updated to include first a non-compatible 441-line color standard in 1950, which was replaced by a compatible 525-line, 29.97fps color standard approved in 1953 and used to this day.

Current high definition video standards were developed during the course of the advanced television process initiated by the Federal Communications Commission in 1987 at the request of American broadcasters

FCC process, led by the Advanced Television Systems Committee (ATSC) adopted a range of standards from interlaced 1080 line video with a maximum frame rate of 30 fps, and 720 line video, progressively scanned, with a maximum frame rate of 60 fps. The FCC officially adopted the ATSC transmission standard (which included both HD and SD video standards) in 1996, with the first broadcasts on October 28, 1998.

WHAT IS DIFFERENCE?

High-definition television (or HDTV, or just HD) refers to video having resolution substantially higher than traditional television systems (standard-definition TV, or SDTV, or SD). HD has one or two million pixels per frame, roughly five times that of SD. Early HDTV broadcasting used analog techniques, but today HDTV is digitally broadcast using  video compression.

High quality of sound projection.

•Increase number of programs local broadcasters can provide Improve the Quality of Picture and Sound Converting to HDTV will also free up parts of the scarce and valuable broadcast airwaves.  Those portions of the airwaves can then be used for other important services.

HDTV & SDTV COMPARISON

Judging simply on pixel count, a 1080i HDTV image is 6 - 9 times better than a standard, NTSC image.

Audio is also improved. The ATSC standards call for AC3 or Dolby Digital sound, which can provide 24-bit 5.1 surround sound.

HDTV & SDTV COMPARISON

LCD HDTV LCD stands for liquid crystal

display. LCD has become the best-selling kind of display for TVs and computer monitors.

Liquid crystal displays work by running electric current through pixels filled with liquid crystal solution, causing the crystals to align a certain way. The alignment affects the intensity of light shining through the solution.

Alternatives to LCD television displays include old-fashioned cathode-ray tubes (CRTs), as well as plasma screens and light-emitting diode (LED) displays.

HDTV stands for high-definition television, video with a resolution substantially higher than that seen on traditional TVs, often referred to as "standard definition.

Televisions that display HDTV video typically have resolutions of 1280 x 720 pixels or 1920 x 1080 pixels--or about 1 million to 2 million pixels. Standard TV resolution is 640 x 480 pixels, or about 300,000 pixels. HDTV also has a wider image area, with a width-to-height ratio of 16:9, compared with a 4:3 ratio for standard TVs.

EVOLUTION OF HDTV IN INDIA

The introduction of 3G and HDTV along with the staging of the Commonwealth Games in October will boost new media growth.

India as a most dynamic market of HDTV If you want to see HDTV program or HD movie (mpeg 4

format), you need good HD TV. There are many HD TV   present in India in the cost range of Rs 50,000 to Rs 3,00,000.

Hitachi L37X01A 37? Full HD LCD TV – Rs.85,500/-. Hitachi L42X01A 42? Full HD LCD TV – Rs.88,500/ Hitachi P50X01A 50? Full HD Plasma TV – Rs.168,800/- Hitachi P60X01A 60? Full HD Plasma TV – Rs.420,800/- Samsung LN40A550 Full HD LCD TV – Rs.46,000/-.

SCOPE IN INDIA

The 3.2 million Flat –panel TV’s sold in India last year, full-HDtv (1080p) account for 15-20 percent while the rest are HD-ready (1080i/720p).

Sony Bravia ZX1 HDTV, the thinnest LCD TV from Sony has been launched in India. Barely 9.9 mm thick, this will be the thinnest LCD TV in India so far. 

SCOPE IN INDIA The price drop in HDTV in India expected, as Dish TV,  Reliance

Big TV and TATA sky satellite TV channel providers are having plan to start HDTV channels. The date is still not clear. Currently only “Sun Direct HD” provides two HD channel in India, both are movie channel, one in Tamil and other in Telugu.

Currently in India, TV program producers are not making programs in HD TV format. If Dish TV starts providing HDTV channels, you can see National Geographic Channel (NGC), HBO, Discovery channel etc in HDTV, because they have HDTV program platform also.

Without using Sun Direct HD, you can enjoy clear picture of HDTV by watching movie in MPEG 4 format from DVD player.

SCOPE IN INDIA The numbers are still very small. About 15-20% of new

customers of DTH services in the metros are opting for HD STBs

HD will become the standard in the days to come and consumers don’t like to change/upgrade big-ticket items so often.

With SUN Direct HD you can enjoy Discovery HD, Tamil HD service, Sun TV HD, Colors HD and Telugu HD service. 

Dish TV offers the following channels – ZEE cinema HD, ESPN HD, ZEE TV, Star Sports HD, Discovery HD and National HD. 

DTH player TATA sky has been lining up recent Hindi movies in HD

ADVANTAGES OF HDTV

High Definition TV offers unprecedented clarity.  As HDTV is transmitted via a digital signal, the viewer is assured of crystal clear and noise-free reception.

High Definition TV provides unequaled sharpness. HDTV offers the viewer much sharper pictures than currently prevalent analog television.

HDTVs have more number of lines of resolution. Thus, the visual information of images on HDTV is more or less 2 to 5 times sharper.

ADVANTAGES OF HDTV High Definition TV offers the most crisp and defined sound.  As HDTV

is transmitted via a digital signal, it contains digital sound. High Definition TV’s digital audio naturally sounds better than a standard television’s sound, which is analog. 

HDTVs usually have Dolby Digital 5.1 Surround Sound, allowing TV viewers access to full surround sound features.  HDTV sound can be compared to the best cinema surround sound.

High Definition TV provides a wider screen picture. HDTV uses a 16 by 9 aspect ratio.  With this size of picture, sides of pictures which are usually cropped and cut, especially those in theatrical films can now be seen. 

High Definition TV also allows viewers to tune into more than one program on the same channel. Since HDTV is transmitted digitally, it also allows for electronic program guides, additional languages and subtitles.

DISAVANTAGES

Main Disavantage of HDtv.....

DISAVANTAGES

High cost specially in developing countries like India. To be able to receive HD content, you need to have

an HD-ready TV set or TV set with built-in HDTV tuner, which is comparatively expensive. Also, traditional SD programmes originally filmed in the standard 4:3 ratio, when seen on an HDTV monitor, will have empty margins to the left and right of the image because 16:9 wide-screen

Normally, the HDTV transmission is provided through satellite and the same may not be available on free basis. In such a case, you may be required to subscribe to HDTV with the service provider.

DISAVANTAGES HDMI, or component video cables, must be used to support

high-definition signals. HDMI is an all-digital connection that allows both HD audio and video to pass through a single cable. If you use older video cabling standards like com-posite or S-Video for connections from a cable box or satellite dish, you will get only an SDTV-quality picture.

Another drawback of HDTV is that most of the operators do not fully follow HDTV specifications. So the HD picture quality is usually not as good as promised. Operators tend to use slower bitrates or lower resolution to accommodate more channels within the limited bandwidth, which reduces the video quality.

While on an analogue TV, the interference causes the picture to slowly deteriorate from bad to worse, interference in HDTV broadcast will freeze, skip, or display ‘garbage’ information.

CONCLUSION As old analog techniques retires, HDTV programming,

products, and production services will continue to grow exponentially. Move will be cheaper, quicker, and easier as products and services become more widespread and people grow accustomed to the new technology.

Use HD cable wires to get full HD quality picture & sound

Take HD Setup boxes More competition of DTH companies in market lower cost. Shoot TV serials & Cinema’s with HD camera.

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